438133 has 2 divisors, whose sum is σ = 438134. Its totient is φ = 438132.

The previous prime is 438131. The next prime is 438143. The reversal of 438133 is 331834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272484 + 165649 = 522^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 438133 - 2¹ = 438131 is a prime.

Together with 438131, it forms a pair of twin primes.

438133 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219066 + 219067.

It is an arithmetic number, because the mean of its divisors is an integer number (219067).

2⁴³⁸¹³³ is an apocalyptic number.

It is an amenable number.

438133 is a deficient number, since it is larger than the sum of its proper divisors (1).

438133 is an equidigital number, since it uses as much as digits as its factorization.

438133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 438133 is about 661.9161578327. The cubic root of 438133 is about 75.9513192404.

Adding to 438133 its reverse (331834), we get a palindrome (769967).

The spelling of 438133 in words is "four hundred thirty-eight thousand, one hundred thirty-three".